Detachable bridge-brace-bar spectacle construction



Jan. 11, STEVENS DETACHABLE BRIDGE-BRACE-BAR SPECTACLE CONTRUCTION uummw/ lllllllll! A T TOR/U EYS.

Patented Jan. 11 1949 DETACH'ABLE BRIDGEFBRA CEAEAR SPECTACLE cons'rrwc'rloN Frederick A. SteVensQ Providence, R. I. '1 t Application January 23, 1 94l5 Scrial 642,890

This invention relates to an ophthalmic mounting and more particularly to the mounting of ashigh arm at the nasal edge of a lens;

In the mounting of a high arm in a spectacle,

usually .the fastening member which holds the lens in position at the bridge ornasaledge-oflthe dens-passes throughthis high arm forsecuring one end of it in position. In such a mounting the arm may move pivotally with such securing means, for instance when the high arm is bent there is a tendency to move the securing means.

Further, because the high arm serves at its o pposite end as a connection for the temple, it is necessary that the temple end remain substantially in a fixed position with relation to the lens, and it is considered necessary to also fix the temple end of the high arm. I

One of the objects of this invention is to provide a construction which will secure the nasal or bridge end of the high arm in such a manner that it will be unnecessary to secure the temple end of the high arm to the lens.

Another object of this invention is to provide a securing of the nasal or bridge end of the high arm so as to leave the high arm free to be bent Without moving or changing the securing means in any manner.

Another object of this invention is to mountthe nasal or bridge end of the high arm so that it cannot rotate or swing with or about the securing pin as a pivotal point.

Another object of this invention is to so arrange the binding of the lens in position by means of a strap that the high arm and lens strap will be bound by one and the same member for securely binding the entire assembly in position.

Another object of this invention is to provide Fig'. 7 isa sectional view similar a binding arrangement so that there is no chance of loosening the securing screw by movement of the high arm.

With these and other objects inview, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claim.

In the accompanying drawings:

Fig. 1 is a front elevation of the spectacle equipped with this invention;

Fig. 2 is a top plan view thereof showing the temples broken away;

Fig. 3 is a section on line 3-3 of Fig. 1;

Fig. 4 is a sectional view similar to Fig.3 but showing the parts in exploded relation so that they may individually better be seen;

Fig. 5 is a rear view of one of the lenses with l'Claim. (o1. ss iii its-bridge strap and highar m mounted in posim'entalfiportion of 'the lens, the stralL, and the vhiglra'imin separated; but adja'cejnt relation indicating therelative positions of these parts; v

to- Fig. l of a modified constructiony and Fig. 8 is an edge view of the strap shown in Fig. 7.

In proceeding with this invention, I provide a strap for a lens which will have ears in spaced relation to receive the lens between them. One ear of the strap is thinned or omitted and a high arm which is to be mounted has an ear to extend along this thinned ear to the strap or replaces such ear. Openings to extend through the strap arms, the lens, and the portion of the high arm which extends along one strap arm are in registry to receive a bolt or threaded pin to hold the parts. assembled and in order to prevent swinging of the high arm with or about this pin, a projection on the high arm enters a recess in one ear along which it extends so as to provide a two point connection and thus prevent swinging about the pin as an axis.

With reference to the drawings, I0, In designates the lenses. edge of each of these lenses, there is provided a strap designated II. This strap has the usual ear l2 and a thinned ear at the back thereof designated 13, these ears being connected together by a shoe portion l5 which has arms l6 and IT to extend along and engage the inner edge of the lenses ID. A bridge is extends between the straps and is joined to this shoe I5 and from adjacent the ends of the bridge at its junction with the shoe there extend bendable arms to which support nose pads 20.

A high arm designated generally 2] is provided which is broadened out with relation to the wire .forming the general extent of the arm 2| so as to lay along the thinned ear I3 of. the strap. This arm is provided with an opening 23 which is threaded. The lens 10 is also provided with a hole 24 and a bolt or threaded pin 25 extends through the holes in the ears l2 and I3 and the hole 24 in the lens. The threaded end. 26 of this pin 25 enters the threaded opening 23 in this ear 22 of the high arm. A head 21 01 the bolt fits into a recess 28 in the arm 12 and this head is slotted as at 29 so that it may be entered by means of a screw driver for rotating the same.

In order to prevent rotation of the high arm On the inner nasal or bridge thereof. to wholly contain the pin 3| of the high arm. A bulge inthe shoe as at 31 may .be necessary L 2| with or about the pin 25 as a center I provide a recess 30 in the ear Y3 and a projection 3| on the ear 22 enters this recess. This recess may be so located that the projection 3| extends into the space between the ears l2 and I3 and in this case a recess or notch 32 is also provided in the edge of the lens l0 so that when the lens is in position the notch 32 and recess 30 will align for the reception of the projection 3|.

By this means of mounting the high armin position, the ear end at the bridge or nasal edge will be maintained firmly in position and bending of the long arm 2| may be had without danger of releasing or loosening the" bplt -or' 'piii25.

This bending may serve to cause t'he' high arm 2| to follow'the contour of the lens lfl 'and also to properly position the spaced ears 33 and fl for mounting the templesifiin position iii'the assembly of the spectacle.

In the modified form shown in Figs. '7 and 8,

the strap 36 has an; ear lz' to engage the front of the lens and a shoe I5? to engage theedge In this shoe -is.a; notch 30' of a size for this purpose." By thisarrangementthe edge of the lens need not benotched such as at 32 as shown in the other figures.

I claim: I i

In an ophthalmic mounting a bridge having a lens strap with an ear to extend along a face of a lens, said an having a hole therein and -in addition an opening extending therethrough, a lens having a hole to register with said hole in said ear and a recess in its edge to register with said opening, a high arm designed to extend along 'the top edge of-the'lens'and'having a support at one end with aprojection 130"8Xt81ld into said opening and recess and also having a hole to register with said holes and a securing member to extend into said holes to hold the lens strap-enough arm assembled with the lens,

FREDERICK A. STEVENS.

REFERENCES CITED The following references are of record in the file of this patent:

c Number UNITED STATES PATENTS 

